| 赵洪伟,舒海龙,王倩,刘铁军,沈彦燕.科尔沁草原高空风场垂直特征及变化分析[J].沙漠与绿洲气象,2020,14(1):72~79 |
| 科尔沁草原高空风场垂直特征及变化分析 |
| Analysis of Vertical Characteristics and Variation of Upper-wind Field in Horqin Grassland |
| 投稿时间：2019-06-30 修订日期：2019-11-25 |
| DOI：10.12057/j.issn.1002-0799.2020.01.009 |
| 中文关键词: 风廓线 三维风场 平流层 季节变化 日变化 |
| 英文关键词:wind profile three-dimensional wind field stratosphere seasonal variation diurnal variation |
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| 摘要点击次数: 1816 |
| 全文下载次数: 2026 |
| 中文摘要: |
| 利用2008-2014年CFL20G风廓线雷达数据对科尔沁草原高空风场垂直特征及变化进行研究。主要对高空三维风场季节变化的统计学特征、典型高度层上的变化规律及垂直高度上的日变化规律进行分析。分析发现：四季中高空20-40m/s风速出现的频率最大,3000米至18000米科尔沁草原高空以偏西风为主。垂直高度上水平风速呈一波一谷型变化,随着高度的增加,高层水平风速开始增大的时间有所推后。12600米及以下各层平均风速最小的季节为夏季,最大的季节为冬春两季；19000米平均风速最小的月份为12月份,风速最大月份为8月份。垂直速度在5500米以下有明显日变化,1500米和3000米有较为明显的年变化,最大值出现在春夏交接的4-6月份,最小值出现在12月份,5000米以上垂直速度没有明显的年变化。 |
| 英文摘要: |
| Based on the CFL20G wind profiler radar data from 2008 to 2014, the vertical characteristics and changes of the upper-wind field in the Horqin grassland were studied. It mainly analyzes the statistical characteristics of seasonal variation of the three-dimensional upper-wind field, the variation on typical height layers and the diurnal variation of vertical height. The analysis find that in the four seasons, 20-40m/s upper wind is the most frequently, and the upper air of Horqin grassland from 3000m to 18000m is dominated by westerly wind. At the vertical height, the horizontal wind speed changes in a wave-valley pattern. As the height increases, the time of the high-level horizontal wind speed increasing is delayed. The season with the minimum average wind speed appears summer at 12600m and below, and the maximum appears winter and spring. The month with the minimum average wind speed appears December at 19000m, and the maximum appears August. There is an obvious diurnal variation in the vertical velocity below 5500m, and more obvious annual changes in the vertical velocity at 1500m and 3000m. The maximum value appears from April to June of the spring-summer handover, and the minimum value appears in December. There is no obvious annual change in the vertical velocity above 5000m. |
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